Improvement in printing-presses



JOHN WRIGHTQOF P1-11LAD13LPH1A ,-PENNSYLVANIA..

Leners 12mm ivo. 91,191, and Jane s, 186e,

mrnovslimn'r IN PRINTING-PRESSES.

'.ilie` Schedule referred to in these Lettera Patent andr 'partl of tnes mn'u. 4

To all 'whom it may concern Beit -known that I, JOHN K.;Wn1enr, of Philadelphia, Pennsylvania, have invented fa new and useful Printing-Press; and I do herebydeclare that the .following is a fnlland exztctdescription of the construction and operation of the saine, reference being had to the annexed drawings, forming part hereof, and to 'the-several letters marked thereon, in which drawings- Figure 1 is a perspective view of the press, one side I' of the frame being removed, olonly outlined in red ink. Y

Figure 2 is an elevation of the oli' side of the frame.

Figure '3 is a perspective .view of the printing-cyl` indersand hiking-rollers broken off, showing the sockvets,enclosed bearings, and attached springs, relating to these rollers, and also' the cams, which act on said rollers to press tlieml wayin-oni theV printing-cylinders ntfproper times, as`hereinafter described;

Figure'nfisfa perspective viewer-aange'panting cylinder, showing; tberemovable 'sliding surface plate,`

which holds the form of types, also the longitudinal grooves in which the tongues on said plate slide.

My invention relates chiefly to presses which print bot-h sides of a` sheet at one operation.

a represents' the frame, which may be of castiron,;

braced vtogether with cross-rods.

lb, c, and d, are the type-cylinders, on the shaft of' each of which, outside of the frame, therc is a cogother', as shown. V

f and g' are drums or pulleys, around which the einl-V less exible or jointed fri'sket h passes.

lhe journal-boxes i, of these drums f and g, are adjusted Atoward or from each other, so as 'to tighten or slacken the frisket It by means of the screws j.

k and lare endless belts, of steelor leather, or any suitable material, also passing around the pulleys f and g, these belts being attached to the frisket h by the metallic cross-piecesm oi' the flisket extended, or

wheel, e, iig. 1'; these severalwheels gearing into each 'in any other desired manner.

Each crcss-piece m is provided with projecting sharp points, n, which pierce. and hold the paper in place on theirisket as it (the paper) is drawn from the paper-- roller o, between the printing-cylimlers,to the place of discharge.

0n the rollerc there is wound a. strip of blank paper,

'of nny desired length, to be printed upon.

p q 4r s t u. are rollers, around which pass the belts fr, which are iuclose contact with the roll of'paper on roller '0, the journals of which turn in open sockets, asatw. s

' rlhe roller ucarries the cog-wheel 1, fig.2, which gears into the cog-wheel y. The journals of roller t have bearings. in two arms,

z. which are attached the frame alofrthemachine' by bolts' Vor pivots, as shown, allowing' said rollert to be turned up out ofthe way', when it is desired to remove or introduce thepaper-roller o.

The location of roller tis such as' to increase the friction or driving-'power of the belts i: ou the roll'of y paper, by causing said belts to embrace a large part` of the circumference of the roll of paper, thus causing the paper on the' paper-roller to unwind correctly.

'The roller fr. takes up any slack of the belts v, caused by theY gradual `decrease in thesize ofthe roll of paper' as it is unwound. i

The journals of said'roller fr have 'bearings in slots inthe frame of the machine, one of which slots, partially covered by the removable guard a', is shown in ii 2.

vgbvare springs, secured in place in'the `bearings of roller lr hyguards Lf i These springs allow the speets, the circuxnferei'lce or surface around each cylinder correspoiniing with the width of thel frisket, heinghalf forro and half blanket; the form on cylinderb being arranged thereon, so` that when the Vcylinders arev in motion, said form comes oppo`s'iteto the blanket on cylinder c, and the' form on cylinder c vcomes opposite to the blanket on cylinder b.

L'lhe-form von cylinder d lis arranged so that .when

Y the-cylinders aren'motion, said last-mentioned form vcornes opposite `lto the blanket on cylinder c, and the, form on cylnderg comes opposite to the blanket on .cylinder d, thus "producing four impressions by one revolution, of the printing-cylinders.

c d* e fl 'g h' t" j', iig. 3, are inkiug-rollers, of which Arollers elf" and rollers'g hl are on opposite sidesof the middle printing-cylinder c.-.

The journals of said inkingfrollers revolve in slotted sockets k, each of which encloses a inovable journalbearing, m, and a spring, n', the springsand bearings being connected.

e The sockets k* are slotted,- as shown. l Cams ol are secured, one Ito each endof the printingcylinders b c d, said .cams being arranged as shown.

By thel action of said cams o, the inking-.rolleis are forcedv away from the printing-cylinders, so as not to be in contact with the blanket-portionA thereof, and by the action of said springs n", the hiking-rollers areforced toward the printing-cylinders at the proper time to come in contact with' the `typeportiouor ,forrn thereof. f 1

The discharging-apparatus consists -of a drum or" 'cylindei.7 Pwhich constitutes the base to'which other parts are attached. f

This cylinderprotatcs on its axis d, whichhas bearings in the traine a of the machine, and carries;

roller clto adjust itself 'freely to the variation in the tension of. the belts '12 4snclr-varlcniiojns being-caused, before mentioned, bym Ithe decrease in the size of the roll of. pape-r. The printing-cylinders bc d are similar in allrct V be in 'conformity with the curve 4The removablev -on one end the cog-wheel r', which gears into the cog# wheel y, wl1ich gears into the cogwheel t', which gears into the cog-wheel u', as shown in tiff. 2.

The circumference or girth of cylinder p is divided into any number of equal-sized sections, each of which Vcorresponds in length, measuring around the cylinder, with one of the sections or subdivisions of any ofthe printing-cylinders. i

o are dat springs, fastened'at one end to thefcylinder p, and provided with crossbars wf at their other or free ends. n l f The cross-bars w' extend beyond the length `of the cylinder pl, the ends of said bars sliding upon the inner sides or edges of two curved tracks or cams `These barsw' also carry each -a serrated knife, 3f, said knives being secured to 4said bars.

z -is a narrow plate extending. longitudinally across 'the cylinder p1, in close proximity to the sharp. points' s', and 'operating as an auxiliary ily at the same time thatit relieves the paper from the sharp points.

Plate z isattached to two arms, which work through' spiral springs aP-in 4recesses li* in the cylinder p, said arms being providedy with projecting pins` c2, which, in the revolutiouof cylinder p, come in contact with two stationary cams (ll, fastened to the opposite sides of frame aofi-he machine.

is a .dev-ice, operating as a following-ily, composed of l liat' springs or dy-rods f, connected by a cross-piece, g, the ends of which extend far enough beyond cylinder p to enable them. to run on guidetracks or cams h2, said flat springs fbeing attached, atone end, to the cylinder p., at the same points where the springs c are attached. Said following-ily cz'h'aving more elasticitythan the-fly which carries the knife y', follows the cut-off sheet directly down to the `receptacle or pile of printed sheets below, and ,then instantly springs up, remains in contactwith cross-bar fw', and is carried away byfthe' motion .of .cylinder p1.'

' s are projectingsharp points, which pierce the paper,

and thus hold it on the cylinder p.

Each section of cylinder p* is provided with project'-,`

ing .sharp points, a ily, an auxiliary fly, and a follow ing-dy, similar to those. described.`

' f andy2 are rollers revolving ln'contact with cylinhz is a serrated circular knife' on the roller g2, -the serrations of said knife running in a groove formed in the circumference of the cylinder p. caused toreyolve byproper mechanism more rapidly than. the cylinder p.,.fo1the purpose of slitting the sheet when desired.

-tig. 1, is a trough, or receptacle for steam or water. It is perforated at' the bottom, to allow sufi'- cient water lor steam to escape on to the endless belts 17,'01' blanket, which partially embrace the. paper on the paper-roller, vto dampen saidl belts, or blanket,

. which, in turn', dampen the blank paper as'it'is unwound. N,

4The frame a, onone side or the other of the press,

I o1: on both' sides, if desired, is out away, forming an 'f aller-Wist @Graff kfg-2,'upposite tne"middre=prntihg.i

cylinderc, tofacilitate the placing of the type upon the last-named cylinder, the cog-wheel u', or wheels u' and c, being temporarily removed for the purpose.

fm, fig. 4, is a metallic plate, which is bentso as to of thefprintingfcylinder to which it is applied.l A Its edges are turned vover slightly, so as to form tongues, .which slide in two similar grooves n, while they at the same time hold the plate securely to the' pylin'der,

surface-plate mz serves as a base, on which the form of typeisfastened, said plate being removed for the `more convenientisteningof the typeform thereon, and being then introduced through the This knife is` on the cross-pieces m of the .frisket, pierce and. thus.

printing-cylinders by. and-c, receiving an alternate impasses between the cylinders c and d again,receiving an alternate impressionvon each side ofthe paper, the

sheet being thus perfected,

The paper is thence drawn toward and delivered-on 'olf andfdischarged bythe action of the flies..

. As the cylinder p rotates, the cross-bars w'are ried forward, the ends thereof sliding in contact with Athe inner side of the` g11des, or cams a,.which'are" curved in sucha'manner as to cause saidl cross-bars 'w' to approach and wind around the cylinder. 11', and, .occupy their'"proper recesses therein,nntil said.ba.rs, -by the revolution of cylinder' p, .are brought to those pointsmarkedo2 of saidtwo camsa, where, being suddenly released by the breaks in' said cams', the cross-bars w fly, with considerable force, cutting' off the sheets of paper, and coming down upon. springs pg, on the cams and the following-ily, made lu'p of ceptacle below, or pile of papers thereon. 1

At the-same time that'the knivesyfA other described parts, is thrown out` bythe action o f Vthecams (1,and relieves the'cnt-oiisheet from the hold'of points's'.

stead of the one, each of the t-wo Vheilig "similar tothe spondingly increasing the height of frame a.

o f the printing-cylinders.

a single e1 1 dl es s 1 v belt', or blanket, corresponding in widtlfwiththe width of the paperfmay be employed, to answer the double purpose of dampening and unwinding the paper.

The endlessfris tached to saidfrisket to move it, may be made'of metal, leather, canvas, orally other flexible materiali oriuplace of employing the flexible steel .belts dea beltloomposed of separate metallic plates jointed together, or an endless chain, may be empl'oyed,'the

belts turn, when chains or belts of jointed metallic plates' are employed, being made inthe shape of atriangular, square, pentagonal, or other polygonal prism,

have been arranged upon the printing-cylinders, the

put in place, and the roller t brought into the position' lshown in fig. 1'."l The press is then put in motion, and the' endless belt-s c unwind the vpaper from the paper-roller o, on to the endless frisket I1., and the project-ing poinjts n,'

hold the paper, which is drawn forward between fthe l pression on-eaeh side. 'Thence' being drawn on,it.

to the discharging-apparatus, theprojecting lpins .s' upon which pierce the paper, and hold it untilitiscixt the springs j" and cross-bars g, having more elasticity and being unoppos'ed, except bythe floor-ortable, on

pile of papers thereon, force each j sheet, as it is cut i on, directly down. upon .the table; door, .or other. ref

lmeintolopsf eration, the auxiliary dy, -made up. of plate Ez and Two printingcylinders,.the surface of each ofwhich I cylinder; also, by employing two endless friskets, v in-J i one described, except that each is only 'half asl'ong: as

the one described; also,.by`1ocating the drum q ion' f a horizontal line with` the cylinder' d; also, by corre The speed ofthe unwinding and dampeuing-helts c, or blanket, must correspond with that ofthe periphery I Inplace of the endlessibelts c tounwindthe paper,

let h, and also the. side belts' atscribed'for driving the frisket, a metallic wire rope, or

'drums around which the frisket and-attached drivingor so'as to present many of equal ares for the links, or plates of the chain to act upon without slipping; or' the frisket and lside belts might be made of one piece.`

An aperture, similar to the aperture It, fig. 2, may be formed in each side of ,the frame a., opposite each of the' printing-cylinders, to facilitate the placing of the type-forms thereon, if desired. l

'lhe gearing by which the printing-cylimlers are opierated may all be arranged on one side of the frame, if desired, and thus leave the apertures through which the -forms of type are placed upon the printing-cylinders unobstructed.

It is not necessary that the type and blanketfspaces` of each'of the printing-cylimlers. should each he in a single division or section, but the type-space of each cylinder may,.if desired, beAv subdivided into two or more equal spaces, and the blanket-space similarly,

subdivided, the subdivisions being arranged so as to alternate on the surface of each cylinder.

Various forms vmay be given to the mechanism which constitutes the base of the flies, orto which 1 The combination of a series of two or more printing-cylinders, the surface of each of which is equally snm divided into `equal alternate sections or divisions of type-space or spa-ces and blanket-space or spaces, or the combination of two or more such cylinders with two or more plain blanket-cylinders, for the purpose 4of printing both sides of a sheet of paper at one operation, substantially as set forth. y

2. The device, consisting of the endless flexible or jointed frisket h, with its projecting sharp points n., or an'y mechanismfor holding the paper thereon, in combination with the endless'exible sidebelts k1, attached to said frisket for propelling it, substantially as set forth. l

3. A removable sliding surface-plate, mgm combinationl with any printing-cylinder, to facilitate the Aplacing of the type-forms on suchcylinder.

4. The rollers p q`s t n, endlessbelts or belt or blanket r, roller r, with its springs or weights, in coinbination with the paper-relleno, in the `'manner and for the purpose substantially as shown and described.

5. Giving the 4ily or flies of a printing-press a revolving motion, by attaching itor themy at one of its or their ends to a rotary or movable base, to effect "rapidity of discharge, substantially as set forth.

` 6. The ily v w', with its serrated knife y', the auxiliary fly z' c", and the following-ily j" g, in combinar l tion with the cylinder p, projecting points s', cams x' hf, and cams d", y means whereof the continuous strip of printed paper is cnt into sheets of the desired size, and discharged, substantially as set forth.

` JOHN K. WRIGH'L.

Witnesses:

GEO. E. BUCKLEY, f W. A. A. MGKINLEY. 

